Home / 31,372.20-47,058.30-12,904.20

Finding the Fourth Proportional to 31,372.20, 47,058.30 and 12,904.20

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Solution

The fourth proportional to 31,372.20, 47,058.30 and 12,904.20 is: 19,356.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,372.20 : 47,058.30 = 12,904.20 : x
  2. Step 2: Convert to fraction form
    31,372.20/47,058.30 = 12,904.20/x
  3. Step 3: Cross multiply
    31,372.20x = 47,058.30 × 12,904.20
  4. Step 4: Simplify right side
    31,372.20x = 607,249,714.86
  5. Step 5: Solve for x
    x = 607,249,714.86/31,372.20
  6. Step 6: Final answer
    x = 19,356.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.